CN216975801U

CN216975801U - Self-pressure sealing stop valve

Info

Publication number: CN216975801U
Application number: CN202123031192.7U
Authority: CN
Inventors: 韩春来; 刘汉钦; 刘锋
Original assignee: Suzhou Shengke Valve Co ltd
Current assignee: Suzhou Shengke Valve Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-07-15
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a self-pressure sealing stop valve which comprises a valve body, wherein a discharge hole and a feed hole are respectively formed in two ends of the valve body, a sealing surface is arranged in the middle of an inner cavity of the valve body, and a first valve body is arranged at the top end of the valve body. The utility model is provided with a valve body, a first valve body, a second valve body, a valve cover, a hand wheel, a valve rod, a valve clack, a sealing ring and a sheet rubber ring, wherein the valve body is provided with an annular groove near the sealing ring, when the valve clack is attached to a sealing surface in the middle of the valve body to close the stop valve, the sheet rubber ring is just positioned at the top end in the annular groove, the sheet rubber ring can be more closely attached to the inner top wall of the annular groove due to the pressure of a medium (gas or liquid) at one side of a feed port, and then an annular rubber air bag, a micro air pump and a connecting pipe are arranged in the second valve body.

Description

Self-pressure sealing stop valve

Technical Field

The utility model relates to the technical field of stop valves, in particular to a self-pressure sealing stop valve.

Background

The valves used on pipelines are various, and the pressure sealing stop valve is the most common valve, and has the advantages of simple structure, convenient manufacture and maintenance, small working stroke, short opening and closing time and the like.

At present, when the sealing stop valve is used, although the sealing effect of the valve clack and a sealing surface is good, when the valve is opened or closed, the valve rod can move up and down in the valve body, so that abrasion occurs between the valve rod and a packing ring in the valve body, medium leakage easily occurs above the valve body, and after the valve plate is abraded due to long-term use, the valve rod and the valve clack can be taken out and replaced only after all structures at the top end of the stop valve are disassembled due to the fact that the valve body of the stop valve is of an integral structure, and the process of replacing the valve clack is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a self-pressure sealing stop valve.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a from pressure seal stop valve, includes the valve body, the valve body both ends are discharge gate and feed inlet respectively, valve body inner chamber middle part is equipped with sealed face, the valve body top is equipped with first valve body, and just first valve body passes through the ring flange to be connected with the valve body top, first valve body top is equipped with the second valve body, and the second valve body passes through the ring flange to be connected with first valve body top, second valve body top is connected with the valve gap, and the valve gap passes through bolt and second valve body fixed connection, the valve gap top is equipped with the hand wheel, valve body, first valve body and the inside valve rod of wearing to be equipped with jointly of second valve body, the valve clack is connected to the valve rod bottom.

Furthermore, the discharge ports and the feed inlets at the two ends of the valve body are respectively provided with a connecting flange, so that the valve body is conveniently connected with a pipeline through the connecting flanges.

Furthermore, the valve clack is tightly clamped with the sealing surface, and when the valve clack is tightly attached to the sealing surface, the stop valve is in a closed state.

Furthermore, a plurality of packing rings are fixed inside the first valve body, and the valve rod penetrates through the middle parts of the packing rings and is in sliding connection with the packing rings, so that the sealing performance between the valve rod and the first valve body is improved.

Further, the fixed sealing ring that has cup jointed in valve rod bottom surface, sealing ring and valve body top and first valve body inside wall sliding connection, the sealing ring bottom is connected with the thin slice rubber circle, the inside top of valve body is close to sealing ring department and has offered the ring channel, the laminating of thin slice rubber circle and ring channel roof, when the valve clack was laminated with the sealing surface, the thin slice rubber circle was closely laminated with the ring channel roof under the pressure of medium, prevented that medium valve body top from leaking.

Further, the inside annular rubber gasbag that is equipped with of second valve body, annular rubber gasbag lateral wall intercommunication has the connecting pipe, second valve body lateral wall is fixed with miniature air pump, and the connecting pipe other end passes second valve body lateral wall and is connected with miniature air pump, the valve rod pass annular rubber gasbag middle part and with annular rubber gasbag sliding connection, increase the leakproofness between valve rod and the second valve body to further increase the holistic leakproofness in this stop valve top.

Furthermore, the top end surface of the valve rod is provided with threads, and the top end of the valve rod penetrates through the valve cover to be fixedly connected with the hand wheel, so that the valve rod can be driven to move up and down through the rotation of the hand wheel.

The utility model has the beneficial effects that:

1. when the stop valve is used, the valve body, the first valve body, the second valve body, the valve cover, the hand wheel, the valve rod, the valve clack, the sealing ring and the sheet rubber ring are arranged, the annular groove is formed in the position, close to the sealing ring, of the valve body, when the stop valve is closed due to the fact that the valve clack is attached to the sealing face in the middle of the valve body, the sheet rubber ring is located at the top end of the inner portion of the annular groove, due to the pressure of a medium (gas or liquid) on one side of the feeding hole, the sheet rubber ring can be attached to the top wall of the inner portion of the annular groove more tightly, the annular rubber air bag, the micro air pump and the connecting pipe are arranged in the second valve body, and the annular rubber air bag is inflated to expand, so that the sealing performance of the valve rod in the up-down moving process can be further improved, and the medium in the stop valve is prevented from leaking from the top of the stop valve.

2. When the valve is used, the valve body and the first valve body are arranged, the first valve body structure is added, and the first valve body is connected with the valve body through the flange plate, so that the valve body can be detached from the first valve body, when the valve clack is poor in sealing performance due to abrasion, the valve body can be detached from the lower part of the first valve body, and then the valve clack is replaced, therefore, parts above the stop valve do not need to be detached when the valve clack is replaced, and the valve clack is more convenient to replace.

Drawings

FIG. 1 is a main sectional view of the present invention;

FIG. 2 is a partial perspective view of the present invention;

fig. 3 is an enlarged view of the utility model at a.

Illustration of the drawings:

1. a valve body; 101. a discharge port; 102. a feed inlet; 103. a sealing surface; 104. an annular groove; 2. a first valve body; 3. a second valve body; 31. an annular rubber air bag; 32. a micro air pump; 33. a connecting pipe; 4. a valve cover; 5. a hand wheel; 6. a connecting flange; 7. a valve stem; 8. a valve flap; 9. a packing ring; 10. a seal ring; 11. a thin rubber ring.

Detailed Description

As shown in fig. 1 and 2, a self-pressure sealing stop valve is related to, including

valve body

1, 1 both ends of valve body are discharge gate 101 and feed inlet 102 respectively, 1 inner chamber middle part of valve body is equipped with sealed

face

103, 1 top of valve body is equipped with first valve body 2, and first valve body 2 is connected with 1 top of valve body through the ring flange, 2 tops of first valve body are equipped with second valve body 3, and second valve body 3 is connected with 2 tops of first valve body through the ring flange, 3 tops of second valve body are connected with valve gap 4, and valve gap 4 passes through bolt and 3 fixed connection of second valve body, valve gap 4 top is equipped with hand wheel 5, valve body 1, valve rod 7 is worn to be equipped with jointly in first valve body 2 and the inside of second valve body 3, valve rod 7 bottom is connected with valve clack 8. The discharge port 101 and the feed port 102 at both ends of the valve body 1 are provided with connecting flanges 6. The valve flap 8 is tightly engaged with the sealing surface 103. A plurality of packing rings 9 are fixed inside the first valve body 2, and the valve rod 7 penetrates through the middle parts of the packing rings 9 and is in sliding connection with the packing rings 9. The inside annular rubber gasbag 31 that is equipped with of second valve body 3, annular rubber gasbag 31 lateral wall intercommunication has connecting pipe 33, and the second valve body 3 lateral wall is fixed with miniature air pump 32, and the connecting pipe 33 other end passes second valve body 3 lateral wall and is connected with miniature air pump 32, and valve rod 7 passes annular rubber gasbag 31 middle part and with annular rubber gasbag 31 sliding connection. The top end surface of the valve rod 7 is provided with threads, and the top end of the valve rod 7 penetrates through the valve cover 4 to be fixedly connected with the hand wheel 5.

As shown in fig. 2 and 3, the sealing ring 10 is fixedly sleeved on the surface of the bottom end of the valve rod 7, the sealing ring 10 is connected with the top end of the valve body 1 and the inner side wall of the first valve body 2 in a sliding manner, the bottom end of the sealing ring 10 is connected with a sheet rubber ring 11, an annular groove 104 is formed in the position, close to the sealing ring 10, of the top end inside the valve body 1, and the sheet rubber ring 11 is attached to the top wall of the annular groove 104.

When in use: when this stop valve needs to be closed, leak gas to annular rubber gasbag 31 through miniature air pump 32, then rotate hand wheel 5 and drive valve rod 7 and rotate and descend, make valve clack 8 and sealed face 103 laminate, thereby close the stop valve, when the stop valve is in the closure condition, thin slice rubber circle 11 just is located ring channel 104, and under the pressure effect of feed inlet 102 interior medium, thin slice rubber circle 11 is closely laminated with roof in the ring channel 104 by the extrusion, thereby prevent that the medium from leaking from 1 top of valve body, then it aerifys annular rubber gasbag 31 through miniature air pump 32, make it seal between valve rod 7 and the 3 inside walls of second valve body, further prevent that the medium from leaking from this stop valve top.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a from pressure seal stop valve which characterized in that: comprises a valve body (1), a discharge hole (101) and a feed hole (102) are respectively arranged at two ends of the valve body (1), the middle part of the inner cavity of the valve body (1) is provided with a sealing surface (103), the top end of the valve body (1) is provided with a first valve body (2), the first valve body (2) is connected with the top end of the valve body (1) through a flange plate, the top end of the first valve body (2) is provided with a second valve body (3), the second valve body (3) is connected with the top end of the first valve body (2) through a flange plate, the top end of the second valve body (3) is connected with a valve cover (4), the valve cover (4) is fixedly connected with the second valve body (3) through a bolt, the top end of the valve cover (4) is provided with a hand wheel (5), valve rod (7) are worn to be equipped with jointly in valve body (1), first valve body (2) and second valve body (3) inside, valve clack (8) are connected to valve rod (7) bottom.

2. A self-pressure sealing shut-off valve as claimed in claim 1, wherein: and the discharge port (101) and the feed port (102) at the two ends of the valve body (1) are both provided with connecting flanges (6).

3. A self-pressure sealing shut-off valve according to claim 1, wherein: the valve flap (8) is tightly clamped with the sealing surface (103).

4. A self-pressure sealing shut-off valve as claimed in claim 1, wherein: a plurality of packing rings (9) are fixed inside the first valve body (2), and the valve rod (7) penetrates through the middles of the packing rings (9) and is in sliding connection with the packing rings (9).

5. A self-pressure sealing shut-off valve according to claim 1, wherein: fixed cover in valve rod (7) bottom surface has connect sealing ring (10), sealing ring (10) and valve body (1) top and first valve body (2) inside wall sliding connection, sealing ring (10) bottom is connected with thin slice rubber circle (11), valve body (1) inside top is close to sealing ring (10) department and has seted up ring channel (104), thin slice rubber circle (11) and ring channel (104) roof laminating.

6. A self-pressure sealing shut-off valve according to claim 1, wherein: second valve body (3) inside is equipped with annular rubber gasbag (31), annular rubber gasbag (31) lateral wall intercommunication has connecting pipe (33), second valve body (3) lateral wall is fixed with miniature air pump (32), and the connecting pipe (33) other end passes second valve body (3) lateral wall and is connected with miniature air pump (32), valve rod (7) pass annular rubber gasbag (31) middle part and with annular rubber gasbag (31) sliding connection.

7. A self-pressure sealing shut-off valve according to claim 1, wherein: the top end surface of the valve rod (7) is provided with threads, and the top end of the valve rod (7) penetrates through the valve cover (4) to be fixedly connected with the hand wheel (5).